$(function() {
  $(document).ready( function() {

    window.onscroll = function() { 
      var t = document.documentElement.scrollTop || document.body.scrollTop;  
      var logo = $( "#menuContainer .logo" ); 
      if( t >= 220 ) { 
          logo.addClass("scroll"); 
      } else { 
          logo.removeClass("scroll"); 
      }
    } 

  });
});